Control Strategy for Frequency Support Based on Modular Multilevel Matrix Converter with Emulation Inertia

Stabilized active power from an offshore wind farm is transmitted to the grid through a modular multilevel matrix converter (M 3 C), in which the M 3 C neutron module capacitor operates in a constant voltage state. In this paper, a control strategy based on the M 3 C to provide frequency support is...

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Bibliographic Details
Published in2023 8th International Conference on Power and Renewable Energy (ICPRE) pp. 1258 - 1263
Main Authors Li, Yibo, Jiang, Yafeng, Wu, Qiuwei, Chen, Jian, Zhou, Qian
Format Conference Proceeding
LanguageEnglish
Published IEEE 22.09.2023
Subjects
Capacitance
Capacitors
Couplings
Emulation
Frequency conversion
frequency support
frequency-voltage model
modular multilevel matrix converter
Neutrons
simulation inertia
sub-module capacitance
Wind farms
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Summary:Stabilized active power from an offshore wind farm is transmitted to the grid through a modular multilevel matrix converter (M 3 C), in which the M 3 C neutron module capacitor operates in a constant voltage state. In this paper, a control strategy based on the M 3 C to provide frequency support is proposed, which simulates the inertia by releasing the energy in the sub-module capacitance in the M 3 C. A frequency-voltage model is established through the linear coupling relationship between frequency and sub-module capacitor voltage. When the system frequency fluctuates, the sub-module capacitors in the M 3 C can absorb or release the energy to simulate the inertia to provide frequency support for the system. Finally, the offshore wind power delivery model based on M 3 C with simulation inertia is built in MATLAB/Simulink, and its results are analyzed and evaluated under load variation.
ISSN:2768-0525
DOI:10.1109/ICPRE59655.2023.10353793